Improvement in sawing-machines



N. PETERS. FNOT LITNOG PNER ASHINGTON D about sans am entre S. CHARLES HOWE, OFTALLENS PRAIRIE, MICHIGAN.

Letters Patent No. 98,968, dated January 18, 1870.

IMPROVEMENT IN SAWINGMACHINES.

The Schedule referred to in these Letters Patent and making partof the same.

To all whom it may concern:

, ing cord-wood, as will be hereinafter fully set forth.

In order to enable others skilled in the art to which my invention appertains, to make and use the same,

I will now proceed to describe its construction and operation, referring to the annexed drawings, in which,- Figure l is a plan view of the entire machine; `Figure 2 is a view of the side of the machine on which the saw is situated;

Figure 3 is a view of the feeding-mechanism, Figure 4 is an end view of the saw-guide; Figure 5 is a side view of the mechanism by which the log is adjusted by hand;

Figure 6 is an end view of the cross-head;

Figure 7 is a rear-side view of" the same; and

Figure 8 is an enlarged view of the pitman-box.

A represents the frame of the machine, which is staked, in any suitable manner, to the ground.

In said frame, at a suitablevpoint, is a platform, B, 'onwhich the operator stands.

vAt one end ofthe frame A, and at right angles with' the same, is laid a track, C, on which the cars D D are placed to carry the log up to the gig-wheels, which Aafterward feed the log to the saw.

The cars D D, with the log, are moved up by means of a chain, a, connected witl the same, and with a. pulley, E, mounted upon a'shaft, F.

^ This shaft has one bearing ina suitable journal-box on the fmme,and the other bearing on a lever, G, which is pivoted at one end to the frame A, and the other end is suspended from another lever, H.

The lever H rests upon and has its fulcrum on another shaft, I, the use of which will be hereinafter set forth, and said lever extends along the rear side of the frame, within reach of the 'operator standing upon the platforln B.

At the end of the shaft F, which rests upon the lever G, as above mentioned, is .a pinion or small cog-wheel, b, which, when said end ot' the shaft' F is raised by the lever H, is thrown in gear with a worm, J, upon the main driving-shaft K, saidshaft being placed across the 'end of the frame A, in suitable journal-boxes on the same.

Byl this means the shaftF and pulley E are made to revolve so as to draw the cars D Dtowardthe saw, or rather toward the gig-wheels L L. As soon as the front end of the log strikes and is caught by the saidy gig-wheels, the tiont car D falls down at the end ef the track G, and the operator, by letting go the lever H,

throws the pinion b out of gear with the worm J, and consequently stops the motion of the shaft F and pulley E.

The gig-wheels L L are concave, with teeth ou their rims, keyed at any desired distance apart on a shaft, M, with the concave sides facingeach other.

The shaft M has its bearings on the frame A,'and its inner end is, by a universal joint, d, connected -with another sha-ft, N, the other end of which has its beal'-,

ing in a bar or lever, O, beneath the lever G, before mentioned.

Said bar or lever O is, at one end, -pivoted in the frame A, and the other end rests upon a lever, P, which is pivoted to the side ofthe frame A, and extends along the front side within said frame, so that'the i operator can, by putting his foot on the end of said lever P, raise the bar 0 and shaft N a suitable distance.

At this end lthe shaft N is provided with a pinion or small cog-wheel, e, which, when the shaft is raised, as above mentioned, is thrown i`n gear with another worm, R, also mounted upon the main driving-shaft, K, and by this means the necessary motion is communicated to the gig-wheels L L, to move the log the desired distance to the saw. When the log is thus moved the proper distance, it is stopped by the operator removing his foot from the lever P. Then, as soon as it is v sawed off, it is again, by the same means, moved forward the proper distance to saw olf anotherpiece.

If, however, on account of knots or for other causes, it should be desired to move the loga trifle, either back or forth, without throwing the shaft N in gear with` the. driving-shaft, I provide said shaft with a pinion, j, and lever, g, with double paul, i, within reach of the operator upon the' platform B,by which means he is l enabled to turn the gig-wheels L L in either direction, thus movin'g the log either bac-k or forth.

On the front side ofthe machine is a curved standard, S, braced by. the bar T, as seen in iig. 2.

'lhecurved edge of this standard is grooved to guide a sliding plate, k, which is raised or lowered at will by means that will be hereinafter fully described.

The plate lc is, by means of two parallel r'ods or guides, l l, connected with a plate, an, which is pivotsd to the frame A, near the main driving-shaft K, and on said rods or guides, the cross-head V, which carries the saw, is placed.

From the plate la projects lthe lever n, by means of which the operator can feed the saw.

,A rope or chain, o, attached to the plate k, passes over apulley, p, in the upper end of the standard S, and back to a pulley, fr, on the shaft I, before mentioned.

ihis shaft has one bearing in the frame A, and the v-other in a bent level', W, which is pivoted to the front W is raised, comes in contact with another wheel, Y,

upon the main driving-shaft K, so that by the friction of these two wheels, the shaft I is rotated, winding up ,the chain o, and raising the saw.

When the saw has been raised to the desired height, the lever W is depressed, so as to bring the wheel X against the cross-bar or brake Z, causing a stationary friction, preventing the saw from descending. When the lever W is raised only just so far that the wheel X will not touch either the brake Z nor wheel Y, Athen the saw will move downward again. v

The cross-.head V is formed of two boxes, a a', provided with g'rooved arms b b', in which is placed a bar, d', bolted to bot-h of said arms, thus connecting the two boxes. Each of the boxes a! is made in two pieces, having semicircular grooves, so that, when bolted together, with leather between them` they will form suitable ways for the rods or guides l Z to pass through.

The cross-head thus formed is placed on the guides l Z, with leathers between, and Babbitt metal run in through holes in the boxes. By renewing this operation as the metal wears out, the cross-head will never wearout, and being in ve pieces, it can readily be taken apart at anytime.

To the outer one ofthe boxes a the saw is secured -by bolts, or other suitable means, and on a pin, e', on tlie outer side of the same box, the pitman A is placed, said pitman connecting with the crank-wheel B', on the end of the main driving-.shaft K.

The pitman A' is connected with the pin c', and the` crank-wheel B', by means of a box, C', at 'each end. The box O' is made of three pieces.

The pieces f' f', which form the box proper, are cast with a groove around their outer edges, so as to be held together by a rod, g, in seinicircular shape, the ends of which pass through a bottom-piece, h', and are tightened by -nuts, as shown in fig. 8. 'The boxes are drilled so as to allow a' thick piece of leather between the pieces f', which may be trimmed and keyed up by tightening the nuts, in which case they will last a lifetime. The pitman A is riveted, or otherwise secured to the bottom-piece h. l

To a standard, D', on the front side of the frame A,

is pivoted a bar, E', which extends alongside of the curved standard S, resting in a notch or recess on the plate 7c, and is, near its front end, provided with a forked projection, fi', which guides the saw.

, On the under side of the bar E', near the. guide i', is a spike, 7c', which holds the log as soon as the saw strikes it. The operator presses his hand upon the bar E for support Aand rest while guiding the saw.

At a suitable point on the front side of the frame A is attached a vertically-slotted standard, G', in which is pivoted a lever, H', which is let down on to that part of the log which is to be sawed 01T, said part being held by spikeslo o' on the underside of the lever.

The lever is held down byzmeans of v ratchet-teeth on another standard, I', a plate being attached to the lever H for the purpose of catching in said teeth.

Having thus fully described my invention,

What I claim vas new, `and desire to secure by Letters Patent, is-

l. The arrangement of the shaft F with pulley E and pinion b, levers G and H, and the worm J, ,upon the main driving-shaft K, all substantially as anil'forl the purposes herein set forth.

2. The arrangement of the shafts M N, gig-wheels L L, joint el, pinions e f, lever g, double'pawl fi, levers O P4, and worm R, all substantially as shown and described.

3. The arrangement of the shaft I, bent lever W,

pulley r, wheel X, wheel You the main shaft K, brake Z, and chain o, all substantially as and for the pur? poses herein set forth.

4. In combination wit-h the devices claimed in the foregoing clause, the plate k, with lever'n, parallel rods or guides ll,pivoted plate m, and curved grooved standard S,` substantially as and for the purposes here in set forth. p

5. The pivoted lever E', provided with forked sawguide k', and spike i', substantially as and for the purposes herein set forth.

6. The cross-head V, when constructed substantially as shown and described.

7. In combination with the 'cross-head V, crankwheel B', and pitman A, the box C', constructed as described, and for the purposes set forth.

In testimony that I claim the foregoing, I have hereunto` set my hand, this 29th day of September, 1869.

S. CHARLES HOWE.

lVitnesses DANL. L. PRATT, ALPHnUs ST. JOHN. 

